@amrith First up this will be moved to mainnet.
Also, i will be adding a way for people to verify accounts. So that a verification provider like say TrueCaller can attest that the account has been verified for its phone number. This will handle the problem of sybils.

@seanbolak Yes, pretty much. I'm confident this is especially a good match for DApps. A centralized authenticator like Google/Facebook for a decentralized app is a misfit - primarily because in a DApp, the Service providers don't need to verify the username on Google, rather need a way to deterministically say that the user owns a certain Ethereum Address; with just as much ease as signing in with Google